I made my own solution on placing the holley regulator, and if Ur confused about the line routing Ive made this to be a fuel return regulator.
I take in fuel from the moroso cool can straight in to the left on the regulator going right thru to the carb, when it reaches 6-7 psi pressure it dumps fuel right down the former "feeding line" and back to the tank..
Here is the inlet and outlet placed, and yes if U wonder Ive also made a wheelwell for the frontend to get rid of gravel/sludge at the fender corners.